Most of us aren't, but when people are trashing a top tier for saying "yeoww" after getting hit at back of the head by ACoC and no visible indication of damage, some people are clearly spreading an agenda. Even Big Mom and Kaido had similar reactions to non-Haki attacks, to pretend like this reflects negatively on Ryokugyu in any way is pure nonsense.
Which is kinda the point, Ryokugyu has shown even less reaction that that, yet he is being ridiculed.
Sentomaru didn't hurt Kuzan at all, he just snapped his head back. Kizaru even commented that his guard won't lose to Sentomaru.
Yeah, that's how slashes work. Who WOULDN'T get a cut on the cheek from Rayleigh?
Well, there's nuance here. A lot of Admiral fans definitely take things too far and deny them taking legitimate damage. But on the other hand, a lot of people pretend like Admirals aren't that durable, despite shrugging off multiple Haki attacks that would neg vast majority of high tiers, freaks like King and Seraphim aside. Some people genuinely argued that Kaido can 2 shot Kuzan or Kizaru, which is also a horrendous overexaggeration.